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Mama L [17]
3 years ago
11

The Aufbau Principle describes that

Chemistry
1 answer:
Nadusha1986 [10]3 years ago
4 0

Answer:

electrons fill lower energy levels first before occupying higher energy levels.

Explanation:

The Aufbau's principle describes that electrons fill lower energy levels first before occupying higher energy levels.

In writing the electronic configuration of atoms, the Aufbau's principle is one of the most important principles to consider.

It states that "sublevels with with lower energies are filled up before those with higher energies".

Sublevels do not fill up in numerical order.

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Determine if the bond between each pair of atoms is pure covalent, polar covalent, or ionic. drag the appropriate items to their
dsp73

Types of Bonds can be predicted by calculating the difference in electronegativity.

If, Electronegativity difference is,

 

                Less than 0.4 then it is Non Polar Pure Covalent

                

                Between 0.4 and 1.7 then it is Polar Covalent 

            

                Greater than 1.7 then it is Ionic

 

For Br and Br,

                    E.N of Bromine      =   2.96

                    E.N of Bromine      =   2.96

                                                   ________

                    E.N Difference             0.00         (Non Polar/Pure Covalent)

 

For N and O,

                    E.N of Oxygen      =   3.44

                    E.N of Nitrogen     =   3.04

                                                   ________

                    E.N Difference             0.40           (Non Polar/Pure Covalent)

 

For P and H,

                    E.N of Hydrogen       =   2.20

                    E.N of Phosphorous  =   2.19

                                                              ________

                    E.N Difference                  0.01          (Non Polar/Pure Covalent)

 

For K and O,

                    E.N of Oxygen          =   3.44

                    E.N of Potassium      =   0.82

                                                   ________

                    E.N Difference                2.62              (Ionic)

6 0
3 years ago
What element forms an ion with an electronic configuration of [kr] and a –2 charge?
nekit [7.7K]
Must be Selenium (Se). It is two space away from Kr, which means that it needs two extra electron to be like a noble gas, Kr.
6 0
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leonid [27]

Answer:

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Explanation:

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How many stereoisomers does 1 chloro 1,2 dimethylcyclobutane have?
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Answer:

<em> three stereoisomers </em>

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<em />

Explanation:

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Balancing equations depends on the atom numbers you start with.

If you are having trouble you can look up ‘chemical equation balancer’ and type in the starting elements and simply replace the arrow with an = equal sign and then enter the reactants. It will show you the balanced equation
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3 0
2 years ago
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